Defensive publication



7 59 005 DEFENSIVE PUBLICATION UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Apr. 11, 1968, 849 O.G. 1221. Identification is by serial number of the application and the heading indicates the number of pages of specification, including claims, and of sheets of drawing contained in the application as originally filed. The file of this application is available to the public for inspection; reproduction may be purchased for 80 cents per sheet.

Applications published under the Defensive Publication Program have not been examined as to the merits of alleged invention. The Patent Oflice makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED FEBRUARY l, 1969 764,017 PLASTICIZED TOBACCO SMOKE FILTER George P. Touey and Cephas H. Sloan, both of P. 0; Box 511, Kingsport, Tenn. 37662 Continuation of application Ser. No. 650,656, July 3, 1967. This application Sept. 18, 1968. Published Feb. 4, 1969 Class 131-267 No Drawing. 20 Pages Specification A tobacco smoke filter comprising a cellulose ester and containing a plasticizer blend of triacctin and a poly(ethylone glycol) diacetate wherein the triacetin content ranges from 40% to 60% and the poly(ethylene glycol) diacetate is selected from the group consisting of di-, tri, tetra,- penta-, and hexaethylcne glycol diacetate. 

